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https://www.itzgeek.com/how-tos/linux/centos-how-tos/how-to-install-netbeans-ide-7-1-on-centos-6-26-16-0-centos-5-7.html
How to Install NetBeans IDE 7.1 on CentOS 6.2/6.1/6.0 / CentOS 5.7